From c79428533ee0eeca9a3fafb11564d8f0cdfdee5f Mon Sep 17 00:00:00 2001
From: Ian Douglas Scott <idscott@system76.com>
Date: Mon, 19 Dec 2022 09:24:12 -0800
Subject: [PATCH] Implement `AsFd`/`AsSocket`

Requires Rust 1.63. If that's a problem it could use the io-lifetimes
crate, or conditionally add these. But I see CI doesn't test on anything
other than the latest stable.
---
 src/lib.rs | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 17dc0ccd..08f40658 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,9 +10,9 @@ use std::fmt;
 use std::marker::PhantomData;
 use std::os::raw::c_void;
 #[cfg(unix)]
-use std::os::unix::io::{AsRawFd, RawFd as UnixRawFd};
+use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd as UnixRawFd};
 #[cfg(windows)]
-use std::os::windows::io::{AsRawSocket, RawSocket};
+use std::os::windows::io::{AsRawSocket, AsSocket, BorrowedSocket, RawSocket};
 use std::result;
 use std::string::FromUtf8Error;
 use std::sync::Arc;
@@ -506,6 +506,13 @@ impl AsRawFd for Socket {
     }
 }
 
+#[cfg(unix)]
+impl AsFd for Socket {
+    fn as_fd(&self) -> BorrowedFd {
+        unsafe { BorrowedFd::borrow_raw(self.as_raw_fd()) }
+    }
+}
+
 #[cfg(windows)]
 impl AsRawSocket for Socket {
     fn as_raw_socket(&self) -> RawSocket {
@@ -513,6 +520,13 @@ impl AsRawSocket for Socket {
     }
 }
 
+#[cfg(windows)]
+impl AsSocket for Socket {
+    fn as_socket(&self) -> BorrowedSocket {
+        unsafe { BorrowedSocket::borrow_raw(self.as_raw_socket()) }
+    }
+}
+
 macro_rules! sockopt_getter {
     ( $(#[$meta:meta])*
       pub $getter:ident => $constant_name:ident as $ty:ty